tramadol worst drug ever

hi new here. quick stats tramadol user 4 months 4-6 aday (200-300mg).tapered off and quit altogether 16 days ago. FEEL TERRIBLE STILL very anxious, bad sinus problems, dizzy and weak. how long will this last? at wits end the anxiety is the worst i just dont feel right. im glad i quit when i did this is the worst drug ever